| Author: | Sprague, John W. |
|---|---|
| Year: | 1969 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Bureau of Mines, |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 8414 |
| Subjects: | Cost effectiveness |
| Research, industrial--Methodology | |
| Research, Industrial--Methodology | |
| Link: | https://hdl.handle.net/2027/mdp.39015077578089 |